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Jimmy’s proof:
Statement 1: In triangle ADC and BCD, AD = BC (opposite sides of a rectangle are congruent)
Statement 2: Angle ADC = Angle BCD (angles of a rectangle are 90°)
Statement 3: DC=DC (transitive property of equality)
Statement 4: Triangle ADC and BCD are congruent (by SAS postulate)
Statement 5: AC = BD (by CPCTC)
Which statement in Jimmy’s proof has an error?
 one year ago
 one year ago
Jimmy’s proof: Statement 1: In triangle ADC and BCD, AD = BC (opposite sides of a rectangle are congruent) Statement 2: Angle ADC = Angle BCD (angles of a rectangle are 90°) Statement 3: DC=DC (transitive property of equality) Statement 4: Triangle ADC and BCD are congruent (by SAS postulate) Statement 5: AC = BD (by CPCTC) Which statement in Jimmy’s proof has an error?
 one year ago
 one year ago

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HashirBest ResponseYou've already chosen the best response.1
yeah apparently there is no error !!
 one year ago

KingBest ResponseYou've already chosen the best response.1
Yippee!!Cheers for Jimmy!!
 one year ago

HashirBest ResponseYou've already chosen the best response.1
no i think there can be a mistake in statement five ..... if you consider each statement independent of each other then in statement 5 the student have not mentioned the congruent triangle so may be it can be considered as incorrect ever though the relation is correct
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
I guess.. there could be an error in statement 1 , where he says that "opposite sides of a rectangle are congruent)" but .. as far as i know, you never say they are 'congruent', you always say they are 'equal'! :/
 one year ago

KingBest ResponseYou've already chosen the best response.1
if u consider each statement independent then statement 4 is also wrong as u cannot say 2 triangles are congruent without proof or reason.....
 one year ago

HashirBest ResponseYou've already chosen the best response.1
thats CPCTC may be incorrect ....
 one year ago

KingBest ResponseYou've already chosen the best response.1
as far as i know its CPCT[Corresponding Parts of Congruent Triangles] NOT CPCTC
 one year ago

KingBest ResponseYou've already chosen the best response.1
nah CPCTC is rite its [Corresponding Parts of Congruent Triangles are Congruent]
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
@Hashir : Naah, 'CPCTC' is absolutely correct.. because.. he already proved that the 2 triangles are equal by SAS postulate..
 one year ago

HashirBest ResponseYou've already chosen the best response.1
i am saying that there may be a possibility .... if we consider each statement independent
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
CPCTC ('Corresponding parts of congruent triangles are congruent') is nothing but another name/abbr. for CPCT ..
 one year ago

KingBest ResponseYou've already chosen the best response.1
Okay Conclusion:Jimmy is an overcautious idiot trying to find a mistake in an absolutely correct proof!!
 one year ago

HashirBest ResponseYou've already chosen the best response.1
so 3 has a problem ... 3 is incorrect ... got it now
 one year ago

KingBest ResponseYou've already chosen the best response.1
whats wrong in 3??DC=DC is not true?
 one year ago

HashirBest ResponseYou've already chosen the best response.1
bro in transitive property we prove that if a=b and b=c then a=c .... not a=a !!!
 one year ago

HashirBest ResponseYou've already chosen the best response.1
it doesnt make any sense
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
@Hashir : I totally agree with you!!.. transitive property is > if a=b, and b=c .. a=c! :P
 one year ago

HashirBest ResponseYou've already chosen the best response.1
it can be correct if he says that DC=CD
 one year ago

KingBest ResponseYou've already chosen the best response.1
oh!ok!i did not know that!!so yes Jimmy being overcautious helped him as @Hashir the detective finds the criminal eluding his 2 pardnas!
 one year ago
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